P16510: Reconstruction of a Wooden Common Press
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Systems Design

Table of Contents

Problem Statement Summary

Cary Graphic Arts Collection maintains a collection of iron printing presses from the 19th century onward. They would like to expand this collection to include the earlier style of printing press, the wooden common press.

The team will deliver a full scale, working reconstruction of a wooden common press for display at the Cary Graphic Arts collection. This will be accompanied by detailed drawings, manufacturing, and assembly instructions.

More details available on the Problem Definition page.

Team Vision for System-Level Design Phase

Summarize: During the system level design phase, the team will look for existing presses that can be studied and Goals:

Accomplishments

Functional Decomposition

Benchmarking

Surviving or documented wooden presses will serve as the primary benchmark for the project. Several presses have been identified as suitable candidates, however dimensions are not widely available. The team will visit these presses over the course of the project and gather measurements and build upon this benchmarking table.
Benchmarking

Benchmarking

Morphological Chart and Concept Selection

The team has been tasked with created a reconstruction of a wooden printing press. In order to maintain historical accuracy, the possible solutions must be features on presses of that time period. Working within these constraints, the figure below contains the possible solutions for functions of the press that are representative of reference material.

Possible concepts for printing press reconstruction

Possible concepts for printing press reconstruction

Concept Development

Several possible concepts were pulled from the morphological chart. Seeing as some attributes are restricted to only one solution, those were not included in the analysis. The concepts were evaluated against the selection criteria using the printing press at the Mackenzie Printery Museum as a datum.

Analysis of possible concepts for printing press reconstruction

Analysis of possible concepts for printing press reconstruction

Concept Selection

The concepts will be evaluated according to the following selection criteria:
  1. Historically accurate
  2. Within time period
  3. Elements seen on English presses
  4. Disassemblable
  5. Machinable without modern power tools (Meet historical accuracy)
  6. Likelihood of failure (lower is better)

Systems Architecture

Energy, Information, and Material Flow

Flow of energy, information, and material in the system

Flow of energy, information, and material in the system

System Assembly

The following images show the complete system assembly of an example wooden press.*
Franklin press showing the assembly components; side view*

Franklin press showing the assembly components; side view*

Franklin press showing the assembly components; front view*

Franklin press showing the assembly components; front view*

* Images from: Harris, Elizabeth, and Clinton Sisson. The Common Press: Being a Record, Description Delineation of the Early Eighteenth-century Handpress in the Smithsonian Institution. London: Merrion, 1978. Print.

Feasibility: Prototyping, Analysis, Simulation

Load on the girts

Question:

How much would it weight to fill the entire printable area with lead? What dimensions do the girts need to be to carry the load?

Assumptions:

Analysis:

Maximum load on girts

Maximum load on girts

Comments:

In theory, the form would be at most 177lbs, not including the chase (which would be the same for all locked up forms), meaning the girts must accommodate that load plus that of the bed of the press (including the coffin, plank, stone, etc.).

Aesthetically Pleasing

Question

What design is considered aesthetically pleasing? Can we assess before woodworking and manufacturing?

Approach

Research common wood design of the era, create prototype, collect response from customer and random sample.

Analysis

Construct prototype - 3D printing or Foam

Example Prototypes

Prototypes to be added later

Future Feasibility Analyses

Once 3D modeling has been completed, the next analyses to performed would be:

Risk Assessment

Risk register

Risk register


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